This is a fine Late 18th or very early 19th century fine silver (tested) and past button. The faux emerald stones are kite-shaped, and so less commonly found. They are in cut-down air-tight settings. It measures 1 & 1/8" and is in very fine condition. I acquired these sewn onto cloth with the shanks having been removed so they would lay flat. The shank is a replacement, not a restoration--just a good serviceable sterling silver loop.